<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <!-- import CSS -->
    <link rel="stylesheet" href="https://cdn.staticfile.org/element-ui/2.15.9/theme-chalk/index.css">
</head>
<body>
<div id="app">
    <el-page-header style="background-color: #0095d7;color:white;line-height:60px" @back="goBack" content="添加轮播图">
    </el-page-header>

    <el-upload
            name="pic"
            limit="1"
            action="/upload"
            list-type="picture-card"
            :on-preview="handlePictureCardPreview"
            :on-success="handeleSuccess"
            :on-remove="handleRemove">
        <i class="el-icon-plus"></i>
    </el-upload>
    <el-dialog :visible.sync="dialogVisible">
        <img width="100%" :src="dialogImageUrl" alt="">
    </el-dialog>
    <el-button @click="insert()">添加轮播图</el-button>

</div>
</body>
<!--引入Axios框架-->
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<!-- import Vue before Element -->
<script src="https://cdn.staticfile.org/vue/2.6.14/vue.min.js"></script>
<!-- import JavaScript -->
<script src="https://cdn.staticfile.org/element-ui/2.15.9/index.min.js"></script>
<script>
    let v = new Vue({
        el: '#app',
        data: function () {
            return {
                dialogImageUrl: '',
                dialogVisible: false,
                url:""
            }
        },
        methods: {
            goBack() {
                console.log('go back');
                history.back();//返回上一页面
            },
            handleRemove(file, fileList) {
                console.log(file, fileList);
            },
            handlePictureCardPreview(file) {
                this.dialogImageUrl = file.url;
                this.dialogVisible = true;
            },
            insert(){
                if (v.url == null) {
                    v.$message.error("请选择上传的图片");
                    return;
                }
                axios.get("/banner/insert?url="+v.url).then(function () {
                    location.href = "/admin.html";
                });
            },
            handeleSuccess(response,file,fileList){
                v.url=response;
            }
        }
    })
</script>
</html>